FLASHBACK:
On a mission for SWORD, Spider-Woman finds a Spaceknight, but she’s attacked by the Intelligencia.
SYNOPSIS:
Abigail Brand tells the Avengers that Spider-Woman is missing, so they go looking for her. Meanwhile, the Intelligencia interrogates Spider-Woman over what she knows about Spaceknights. The Avengers arrive and beat up the Intelligencia. Suddenly, the Spaceknight turns on and transforms into Ultron. The Avengers attack him, but Ultron vanishes. Iron Man says he’s seen the future and Ultron will return with genocide.

NOTE:
As it turns out, this comic takes place entirely in the Age of Ultron reality. A good chunk of this comic is re-used in Age of Ultron #10 to show the 616 version. We currently have three characters with this comic in their chronologies (in brackets); that’ll have to be fixed.

SYNOPSIS:
Black Widow is in San Francisco hanging out with friends (Stunt-Master and his agent) when the Ultron drones attack. Everyone around her is slaughtered. Stunt-Master’s arm takeshim over and he claws off half of Black Widow’s face. Black Widow gets to safety and meet up with Moon Knight.

FLASHBACKS:
Black Panther sends a message to the Fantastic Four. The Fantastic Four record a good-bye message to the kids.
SYNOPSIS:
The Fantastic Four return to Earth and find Medusa’s corpse. They’re attacked by Ultron drones; Mr. Fantastic and Human Torch are killed, Thing is overwhelmed and Invisible Woman survives, to be found by She-Hulk.

NOTE:
This was when the Fantastic Four were taveling through space and time on a field trip. Remember that?

SYNOPSIS:
In a world destroyed by Ultron, Hawkeye rescues a captured Spider-Man from villains who want to sell Spider-Man to Ultron. Hawkeye and Spider-Man return to the other surviving heroes and wonder what to do next.

NOTE:
Issue #4 reveals Vision is controlling the Ultron drones, and that Ultron is sending orders to Vision from the future.

FLASHBACK:
Spider-Man wakes up to see New York under attack.
SYNOPSIS:
Black Widow and Moon Knight find one of Nick Fury’s safehouses and wonder what to do next. Meanwhile, Captain America announces he has a plan.

FLASHBACK:
Captain America suggests that since villains were selling super heroes to Ultron, they should too so they can attack Ultron.
SYNOPSIS:
Luke tries to sell She-Hulk to Ultron. Meanwhile, Red Hulk, Black Panther and Taskmaster attack some Ultron drones so they can get Ultron technology. Black Panther dies. Luke Cage and She-Hulk find out Ultron’s not there, but Vision is.

SYNOPSIS:
Luke Cage and She-Hulk learn that Ultron is in the future, controlling things from there. She-Hulk attacks Vision and is killed. Luke Cage escapes, but is caught in a nuclear blast. Meanwhile, Black Widow and Moon Knight decide to go to a Fury safehouse in the Savage Land. Meanwhile, Spider-Man and the other survivors leave New York for the Savage Land. Red Hulk kills Taskmaster. Eight days later, everyone meets up in the Savage Land. Luke Cage is dying from radiation poisoning.

NOTE:
I’m still confused how Red Hulk knew to go to the Savage Land. He wasn’t in communication with anyone else. Did I miss something? Also, it’s a coincidence that Spider-Man’s group decided to go to the Savage Land because they thought it’d be safe; they weren’t in contact with Black Widow, either.

FLASHBACK:
Vision wakes up after being out of commission for a while (circa A4 19).
SYNOPSIS:
The surviving heroes go to Fury’s Savage Land safehouse where Fury is waiting for them (well, not really. He was hoping someone would show up). Meanwhile, Ultron drones attack Austin, Texas. Nick Fury has a plan: use Dr. Doom’s time platform to travel to the future and attack Ultron. Some of the heroes leave to do that, but Wolverine stays behind and has another plan: travel to the past and kill Hank Pym before he can create Ultron.

SYNOPSIS:
Wolverine and Invisible Woman appear in the past, steal Nick Fury’s car and kill Hank Pym. In the future, Nick Fury’s group is attacked by Ultron drones.

NOTE:
As seen next issue, killing Pym just created a divergent reality (duh). In issue #9, Wolverine travels back to this point and diverges reality AGAIN. So, up to the point where Wolverine approaches Goliath is 616’s past, then after that (where Pym is killed) in this issue is the new reality’s past.

FLASHBACK:
Mr. Fantastic and Invisible Girl argue about having kids.
SYNOPSIS:
Wolverine and Invisible Woman travel from the Savage Land to New York. On the way they stop at a SHIELD base. Wolverine messes around with some Brood and Invisible Woman looks at SHIELD’s camera feeds. Sue warns Reed the FF are being monitored by SHIELD.

FLASHBACK:
(some of) The Defenders decide to attack Emperor Doom (three days ago). Ares leads a fight against the Amazons (fb-fb). Dr. Doom and Morgan le Fey have a child (Caroline le Fay); Morgan sends her to the future (centuries ago in 616).
SYNOPSIS:
The defeated Warrior Woman is brought into Doomstadt and thrown in prison with Caroline Le Fay. She’s released to compete in the Latverian games, but instead she reveals Emperor Doom to be a Doombot and Ares is actually running things. Warrior Woman defeats Ares.

SYNOPSIS:
Wolverine and Invisible Woman return to the present, but find themselves in a new reality. They’re attacked by the Defenders, who thinks they’re either Skrulls or sent by Morgan Le Fey. They’re arrested by Iron Man.

NOTE:
In this reality, the Kree/Skrull war ended badly and “Starkguard” has replaced SHIELD. Also, Morgan Le Fey has been attacking a lot.

SYNPOSIS:
An explosion kills the Defenders. Iron Man tells Wolverine to stop messing around with time. Wolverine approaches Pym (overlaps with AOU 6). Meanwhile, Wolverine travels back to the past and knocks out Invisible Woman, then stops his past self from killing Goliath. Invisible Woman (now awake) arrives, and the four come up with a plan to put a failsafe into Ultron, and make Pym forget about it. Later, the slightly younger Wolverine kills the slightly older Wolverine. Meanwhile, Pym creates Ultron.

NOTE:
It can probably be assumed the explosion also killed Xavier and Frost, and the Age of Ultron version of Invisible Woman. But really, who knows?

FLASHBACK:
Invisible Woman drops a message off for Hank Pym (fb, months ago). Hank makes a recording for himself, explaining what he programmed into Ultron (fb-fb, years ago).
SYNOPSIS:
The Avengers arrive and beat up the Intelligencia. Suddenly, the Spaceknight turns on and transforms into Ultron. The Avengers attack him and Wasp has Iron Man upload a virus killswitch into Ultron. Ultron is defeated. Invisible Woman meets with Wolverine; they’re happy the plan worked. Time breaks (or something) and we see a bunch of other realities. Later, Hank Pym, Tony Stark and Beast (who is now in his ape-form) talk about how Wolverine created divergent realities and gave Pym the plan to beat Ultron; they wonder what all that traveling did to the multiverse. Meanwhile, Galactus arrives in the Ultimate universe. On Earth-616, Hank Pym gets an idea about artificial intelligences. In space, Angela arrives in Reality-616.

NOTE:
When time breaks (or whatever) we see glimpses of other realities (like MC-2, Killraven, the Zombie-verse, Squadron Supreme, etc.). These aren’t actual appearances of characters for those realities though, they’re just reminder images.

The flashback takes place before Yellowjacket was replaced by a Skrull. The portion repeated from A4 12.1 (pages 4-25) takes place around comics from 2011. The “later” portion (pages 26-34) takes place around comics from 2013. Beast, Iron Man and Hank Pym all appear in both (1-25) and (26-34).

We aren’t quite caught up to comics from 2011 or 2013 yet, so I won’t bother with them now. Miles Morales & Galactus are already placed in brackets, and I’ll switch out A4 12.1 with AOU 10 in Wolverine’s chronology so we’ll have a reference point (and delete A4 12.1 from Dr. Strange & War Machine’s chronologies, since they don’t appear in this issue). I’ll also suggest placements for the flashbacks, and for the divergent Invisible Woman and Wolverine, so all we’ll have to worry about in the future are the main Marvel Universe, present day (and later) characters.

Age of Ultron #10AI takes place around comics form 2013 and is basically Avengers AI #0, so I’m not even going to look at it right now.

Just to be clear, the Thor & Loki: Tenth Realm miniseries from Original Sin reveals Angela is & has always been from Reality-616, just trapped in a sealed-off pocket dimension (the titular Asgardian "Tenth Realm") for most of her life.